Colorado teen injured by bison in North Dakota national park

A teenage visitor to a national park in North Dakota has been injured by a bison.

Officials at Theodore Roosevelt National Park say the 17-year-old girl from Colorado was on a trail Saturday and walked between two bull bison that had been fighting. One bison charged the teen. She was struck in the back, gored in the thigh and tossed about 6 feet into the air.

Park rangers and Billings County paramedics treated the girl at the scene until she could be taken by helicopter to a Bismarck hospital. Authorities say the teen’s condition is stable.

Park regulations require that visitors stay at least 25 yards away from large animals such as bison, elk, deer and horses.